nanog mailing list archives
Re: Dodgy AS327933 ...?
From: Nick Hilliard <nick () foobar org>
Date: Fri, 11 Aug 2023 10:26:12 +0100
Mark Tinka wrote on 11/08/2023 10:17:
So how would one fumble it to the degree where a fat-finger results in what should be a prepend becoming an AS_PATH?Genuine question - I have zero experience with Mikrotik in an SP role.
If your asn is 327933, then: add chain=foo prefix=192.0.2.0/24 action=accept set-bgp-prepend=2 ... will produce: "327933 327933", and: add chain=foo prefix=192.0.2.0/24 action=accept set-bgp-prepend-path=2 ... will produce: "327933 2".Routeros does command completion on the CLI, so this is finger-slip territory, and the two commands are visually similarly enough to each other that it would be easy not to notice.
Nick
Current thread:
- Dodgy AS327933 ...? Mark Tinka (Aug 10)
- Re: Dodgy AS327933 ...? Frank Habicht (Aug 10)
- Re: Dodgy AS327933 ...? Mark Tinka (Aug 10)
- Re: Dodgy AS327933 ...? Frank Habicht (Aug 10)
- Re: Dodgy AS327933 ...? Mark Tinka (Aug 10)
- Re: Dodgy AS327933 ...? Mike Davis (Aug 10)
- Re: Dodgy AS327933 ...? borg (Aug 11)
- Re: Dodgy AS327933 ...? Mark Tinka (Aug 11)
- Re: Dodgy AS327933 ...? Nick Hilliard (Aug 11)
- Re: Dodgy AS327933 ...? Mark Tinka (Aug 11)
- Re: Dodgy AS327933 ...? Nick Hilliard (Aug 11)
- Re: Dodgy AS327933 ...? Mark Tinka (Aug 11)
- Re: Dodgy AS327933 ...? Nick Hilliard (Aug 11)
- Re: Dodgy AS327933 ...? Mark Tinka (Aug 11)
- Re: Dodgy AS327933 ...? August Yang via NANOG (Aug 11)
- Re: Dodgy AS327933 ...? Mark Tinka (Aug 10)
- Re: Dodgy AS327933 ...? Frank Habicht (Aug 10)
- Re: Dodgy AS327933 ...? Chris Cappuccio (Aug 14)
- Re: Dodgy AS327933 ...? Tom Beecher (Aug 15)
- Re: Dodgy AS327933 ...? Chris Cappuccio (Aug 15)
- Re: Dodgy AS327933 ...? Tom Beecher (Aug 16)
- Re: Dodgy AS327933 ...? Mike Hammett (Aug 15)
- Re: Dodgy AS327933 ...? Chris Cappuccio (Aug 15)